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szabgab · Jul 26, 2021 · 056d711 · 056d711
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diff --git a/crystal/intro.md b/crystal/intro.md
@@ -346,6 +346,11 @@ echo %ERROR_LEVEL%
 
 ![](examples/intro/gets.cr)
 
+## Read number from STDIN
+{id: read-numbr-from-stdin}
+
+![](examples/intro/gets_number.cr)
+
 ## Interactive environments
 {id: interactive-environments}
 
@@ -426,4 +431,3 @@ echo %ERROR_LEVEL%
 * See the [Legal drinking age](https://en.wikipedia.org/wiki/Legal_drinking_age) list.
 * Don't worry if this seems to be too difficult to solve in a nice way. We'll learn more tools to improve.
 
-
diff --git a/crystal/other.md b/crystal/other.md
@@ -253,3 +253,18 @@ All the elements of an array "inherit" the type from the array
 * [Facebook group](https://www.facebook.com/groups/crystallang/)
 * [LinkedIn page](https://www.linkedin.com/company/crystal-language/)
 
+
+![](examples/restrict_type_in_code_for_struct_attribute_fixed.cr)
+
+![](examples/restrict_type_in_code.cr)
+
+![](examples/restrict_type_in_code_for_hash_fixed.cr)
+
+![](examples/restrict_type_in_code_for_struct_attribute_broken.cr)
+
+![](examples/type_inference_from_struct.cr)
+
+![](examples/restrict_type_in_code_for_hash_broken.cr)
+
+![](examples/code_executed.cr)
+